Tarrega was, in a sense, built for this. Its compact medieval layout let the organizers concentrate the venues in the center, so the shows cluster tightly and the crowds funnel between them rather than scattering. The result is a density that turns geography into dramaturgy. The emphasis falls on street arts and on the visual and the unconventional, the kinds of performance that need open air and a passing public rather than a darkened hall. Audiences do not sit and wait; they walk, gather, and press in close, and in doing so they stop being onlookers. Bunched together in narrow streets and small plazas, they become protagonists of the event, part of the picture every company is composing.

The timing of FiraTarrega's birth was no accident. It first appeared in 1981, in the early years after Franco, when the restoration of democratic town councils gave Spain back its public squares as places for people to gather and celebrate. Reclaiming the street was itself a political act, and a festival of open-air theatre was a fitting way to do it. The initiative came from the town's mayor, Eugeni Nadal, who wanted to turn the local festival into a grand civic fiesta and put the whole town in service of a single project. He had powerful allies: Xavier Fabregas, who ran cinema and theatre for the Generalitat de Catalunya, and Joan Font, director of the pioneering company Comediants. The idea, as Nadal framed it, was a confluence: to turn the town's ordinary local festival into a grand fiesta, to draw the townspeople in as participants rather than spectators, and to put the whole of Tarrega at the service of a single concrete project, the theatre. In the mood of those first democratic years, the ambition did not seem outsized at all.

The fair rode a remarkable wave. Around 1980, Catalonia produced an extraordinary burst of theatrical energy, a cluster of companies that would go on to international fame. Comediants had formed in 1978, Vol Ras in 1980; La Vella Dixieland and El Tricicle were finding their feet; and at the start of the decade came La Fura dels Baus and La Cubana, troupes whose ferocious, immersive spectacles rewrote what a performance could be. FiraTarrega gave this new generation a shop window. Positioned near the big cities but far enough away that people had to stay, it became a place where companies could show what they were doing to audiences and to each other, and where a young troupe might catch the eye that changed its future.

Beneath the fire and the stilts runs a working economy. FiraTarrega's stated purpose is to boost the performing arts market and open doors to the wider world for the companies who appear here, accompanying emergent artists, encouraging training, and knitting together the transnational networks along which street shows travel and get produced. Programmers, producers, and agents move through the crowds doing the quiet business of the trade. The fair's stated aims are frankly practical: to accompany and promote emerging artists, to encourage training in artistic creation and cultural management, and to weave the strategic alliances through which street productions get built and booked across borders. The calendar helps everything along: falling at the end of summer, on the last weekend before schools go back, it catches a country in a holiday mood. That is the enduring trick of the place, a serious international fair disguised as the best party a small Catalan town throws all year.